Legal claims defining the scope of protection, as filed with the USPTO.
1. A method of correcting data errors, comprising: identifying, using a controller, a first data error at a first data block stored in page metadata of a first storage medium, the first data block having a first block logical ID, the first data block having a first logical block address of the first storage medium, and the first data block corresponding to a first page table entry of the first storage medium; identifying, using the controller, a second data block of the first storage medium having a second logical block address and having the first block logical ID; and copying, using the controller, the second data block to the first data block based on the identified second data block.
2. The method of claim 1 , wherein the first page table entry is a first bottom level page table entry of a first bottom level page table.
3. The method of claim 2 , wherein the identifying the first data error comprises scanning the first bottom level page table for the first block logical ID.
4. The method of claim 2 , wherein the second data block corresponds to a second bottom level page table entry of the first bottom level page table.
5. The method of claim 1 , wherein the identifying the first data error occurs during a first memory scrubbing operation.
6. The method of claim 5 , further comprising a second memory scrubbing operation, wherein the second memory scrubbing operation determines that the first data error has been corrected.
7. The method of claim 1 , wherein the first data block is stored in a first logical volume, and the second data block is stored in a second logical volume.
8. The method of claim 1 , wherein the second data block does not experience a second data error concurrently with the first data error at the first data block.
9. The method of claim 1 , wherein the first block logical ID is derived from data stored at the first data block.
10. The method of claim 1 , wherein the first data block is stored on a stripe.
11. The method of claim 10 , wherein the stripe comprises a total of 128 data blocks including the first data block, and wherein each data block of the 128 data blocks comprises 512 bytes.
12. A system, comprising: a hardware processor operatively coupled to a storage device; the hardware processor configured to execute instructions, including instructions for a process for managing data, the process comprising: identifying a first data error at a first data block stored in page metadata of a first storage medium, the first data block having a first block logical ID, the first data block having a first logical block address of the first storage medium, and the first data block corresponding to a first page table entry of the first storage medium; identifying a second data block of the first storage medium having a second logical block address and having the first block logical ID; and copying the second data block to the first data block based on the identified second data block.
13. The system of claim 12 , wherein the first page table entry is a first bottom level page table entry of a first bottom level page table, and wherein the second data block corresponds to a second bottom level page table entry of the first bottom level page table.
14. The system of claim 13 , wherein the identifying the first data error comprises scanning the first bottom level page table for the first block logical ID.
15. The system of claim 12 , wherein the first data block is stored in a first logical volume, and the second data block is stored in a second logical volume.
16. The system of claim 12 , wherein the first block logical ID is derived from data stored at the first data block.
17. A controller apparatus, comprising: a hardware processor operatively coupled to a management controller, a storage device input/output controller, and a memory device; the hardware processor configured to execute instructions, including instructions for a process for managing data, the process comprising: identifying a first data error at a first data block stored in page metadata of a first storage medium, the first data block having a first block logical ID, the first data block having a first logical block address of the first storage medium, and the first data block corresponding to a first page table entry of the first storage medium; identifying a second data block of the first storage medium having a second logical block address and having the first block logical ID; and copying the second data block to the first data block based on the identified second data block.
18. The controller apparatus of claim 17 , wherein the first page table entry is a first bottom level page table entry of a first bottom level page table, and wherein the second data block corresponds to a second bottom level page table entry of the first bottom level page table.
19. The controller apparatus of claim 18 , wherein the identifying the first data error comprises scanning the first bottom level page table for the first block logical ID.
20. The controller apparatus of claim 17 , wherein the first data block is stored in a first logical volume, the second data block is stored in a second logical volume, and wherein the first block logical ID is derived from data stored at the first data block.
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January 19, 2021
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